Endoscopic suction-irrigation instrument with insertable probe lockable in partially withdraw position
First Claim
1. An endoscopic instrument comprising:
- a) a fluid chamber having proximal and distal ends;
b) a hollow cannula coupled to the distal end of said fluid chamber, said hollow cannula having a distal end;
c) a port means at said proximal end of said fluid chamber;
d) a probe means having a first locking means on an outer surface thereof, said probe means extending through said port means, said fluid chamber, and said hollow cannula in a first fully inserted position, with a distal end of said probe means extending past said distal end of said cannula;
e) a shell housing said fluid chamber and said port means; and
f) a second automatic locking means housed by said shell, said second automatic locking means for automatically engaging said first locking means of said probe means when said probe means is partially withdrawn to a second position of said probe means where said distal end of said probe means is within said cannula, said second automatic locking means being releasable to allow said probe means to be fully withdrawn from said cannula.
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Accused Products
Abstract
An endoscopic instrument is described having a fluid chamber, a cannula, a shell, a first locking mechanism, and a probe with a second locking mechanism. The fluid chamber has proximal and distal ends. The hollow cannula is coupled to the distal end of the fluid chamber. The port is located at the proximal end of the fluid chamber. The shell houses the fluid chamber, the port, and the first locking mechanism. The probe extends through the port, through the fluid chamber, and through the hollow cannula. In a first fully inserted position, the distal end of the probe extends past the distal end of the cannula. When the probe is partially withdrawn from the shell, the first locking means releasingly engages the second locking means on the probe. Different spring loaded mechanism are described, including one mechanism which is overcome by pulling on the handle of the probe, and another mechanism which requires an active release mechanism.
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Citations
12 Claims
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1. An endoscopic instrument comprising:
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a) a fluid chamber having proximal and distal ends; b) a hollow cannula coupled to the distal end of said fluid chamber, said hollow cannula having a distal end; c) a port means at said proximal end of said fluid chamber; d) a probe means having a first locking means on an outer surface thereof, said probe means extending through said port means, said fluid chamber, and said hollow cannula in a first fully inserted position, with a distal end of said probe means extending past said distal end of said cannula; e) a shell housing said fluid chamber and said port means; and f) a second automatic locking means housed by said shell, said second automatic locking means for automatically engaging said first locking means of said probe means when said probe means is partially withdrawn to a second position of said probe means where said distal end of said probe means is within said cannula, said second automatic locking means being releasable to allow said probe means to be fully withdrawn from said cannula. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification